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Originally Posted by daft_biker
Do they say what focus distance was used for the charts? Macro lenses are often much sharper at infinity than minimum focus.....
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No, they don't specify, but since they're shooting a test chart on a wall, I'd be willing to bet they're nowhere near minimum focus distance--you couldn't actually fill the frame with the test chart that way.
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From what I've seen shorter macro lenses are often sharper...
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There's also the fact that the EF-S 60 is a much newer design than the non-L 100, which is probably why Canon created the L. Crop-body lenses have sharpness advantages because they can use a smaller image circle and the rear element can sit closer to the sensor. Think of it like moving the projector nearer to the screen.
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PS your spider is an orb weaver - it looks very much like Araneus diadematus but I can't see enough detail in the adominal pattern to be sure. A view of the palps would tell us what sex it was....
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Thanks for the ID! Unfortunately, my doorway apparently wasn't a good enough hunting spot and the spider's moved on to a nearby tree, so I can't get another close look.
AS for IS, you may want to wait on reviews of the new 100L Macro, since it's reportedly using a new IS system that can also correct for back-to-front shake (typical IS doesn't, and doesn't really need to). It is, however a $1000 lens, which is generally what puts it out of the running for most folks. I've handheld my 60 (that clover shot was handheld), but I do agree that you may either need a tripod, or (alternatively) adding flash to the scene so you can use a really fast shutter speed.